The godfather of the New Age led a secretive group of devoted followers in the last decade of his life. His closest “witches” remain missing, and former insiders, offering new details, believe the women took their own lives.

ROBERT MARSHALL

Much has been written about the slippery boundaries between fiction and nonfiction, the publishing industry’s responsibility for distinguishing between the two, and the potential damage to readers. There’s been, however, hardly a mention of the 20th century’s most successful literary trickster: Carlos Castaneda.

If this name draws a blank for readers under 30, all they have to do is ask their parents. Deemed by Time magazine the “Godfather of the New Age,” Castaneda was the literary embodiment of the Woodstock era. His 12 books, supposedly based on meetings with a mysterious Indian shaman…